- Try signing in to Webmail with your full address and mailbox password. If that fails, set a new mailbox password.
- If Webmail works, update the saved password in the app for both incoming IMAP and outgoing SMTP.
- Compare the server names, ports, encryption, and full usernames with our server settings.
- Close and reopen the app, then try again.
Do not delete the account as your first troubleshooting step. Local-only folders, drafts, or messages may need a separate backup before removing an account.
If the prompt continues, open a support ticket with the app name, device, exact error, and whether Webmail works. Do not send your password.